2 layers77.5 × 58.5 mm
Motor driver
TokyoTech-Astro/Planetarium
planetarium: 回路データ \ planetarium : 各年にデプロイされたシステム \ memo: メモ(モーターの型番や星座とプレートナンバーの対応などの基本情報)
24 parts1
2 layers110 × 176 mm
Sendai pcb
nuoo1125/sendai_pcb- Size
- 110 × 176 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 110
- Nets
- 131
- Pads
- 461
- Tracks, vias
- 581, 416
- Pours
- 78
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 28 Apr 2026
- Updated
- 28 Apr 2026
Overview
Sendai pcb is an open-source printed circuit board by nuoo1125, from the nuoo1125/sendai_pcb repository on GitHub. It is a 2-layer board of 110 × 176 mm with 110 parts on 131 nets, routed with 581 tracks and 416 vias.
It is built around the RP2350A, MAX485ED and OKL-T/6-W12N-C, with the SLA7078MPRT, W25Q128JVSIQ and 2SA1015 among its other parts. Its parts include 32 capacitors, 24 resistors, 14 connectors, 6 switches and 5 ICs. It belongs with the RP2350 boards of this library.
Main components
9
RP2350A
QFN-60-EP(7x7)Power-on reset (POR)、Undervoltage detection (BOR/LVD/LVR/LVI)、Watchdog reset、Integrated LDO、True random number generator (TRNG)、Hardware ECC check QFN-60-EP(7x7) Microcontrollers (MCU/MPU/SOC) ROHSRaspberry PiMicrocontrollers (MCU/MPU/SOC)
MAX485ED
SOP-8-40℃~+85℃ 1 1 1mA 32 4.75V~5.25V 5Mbps Half-Duplex Transceiver ±8kV SOP-8 RS-485 / RS-422 ICs ROHSHTCRS-485 / RS-422 ICs
OKL-T/6-W12N-C
SMD,12.2x12.2mm1 12.2mm 12.2mm 20mVp-p 300uF 30W 4.5V~14V 591mV~5.5V 600kHz 6A 7.2mm 93% Short Circuit Protection、Over Current Protection、Under Voltage Protection、Over-temperature protection、Automatic fault recovery、Power-on timing control SMD,12.2x12.2mm DC-DC Power Modules ROHSMurataIsolated Power Modules
SLA7078MPRT
ZIP-2316 180mΩ 3A 3V~5.5V STEP/DIR Unipolar Drive ZIP-23 Stepper Motor Driver ROHSSanken ElecMotor Driver ICs
W25Q128JVSIQ
SOIC-8-208mil-40℃~+85℃ 100,000 cycles 120ms@(32KB) 128Mbit 133MHz 1uA 2.7V~3.6V 20 Years 3ms Power-on reset、Hardware write protection、Software write protection、Write enable latch、Absolute write protection SPI SOIC-8-208mil NOR FLASH ROHSWinbondNOR FLASH
2SA1015
SOT-231 PNP 100nA 130 150mA 200mW 300mV 50V 5V 80MHz PNP SOT-23 Bipolar (BJT) ROHSHXY MOSFETBipolar (BJT)2SC1815
SOT-23-55℃~+150℃ 1 NPN 100nA 130 150mA 200mW 250mV 50V 5V 80MHz NPN SOT-23 Bipolar (BJT) ROHShongjiachengBipolar (BJT)
CUHS20S30FS
SOD-323SOD-323 Schottky Diodes ROHSFUXINSEMISchottky Diodes
WS2812B
5mm X 5mm Surface Mount RGB LED with Intelligent ControlWorldsemiUncategorised
README
README.mdsendai_pcb
Parts
110| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | 100n | Capacitor_SMD:C_0603_1608Metric | C25, C26, C27, C28, C29, C30, C31, C32 |
| 5 | 1K | Resistor_SMD:R_0603_1608Metric | 1K, R13, R16, R22, R23 |
| 4 | 10k | Resistor_SMD:R_0603_1608Metric | R8, R10, R28, R31 |
| 4 | 1k | Resistor_SMD:R_0603_1608Metric | R9, R11, R27, R30 |
| 4 | 4.7u | Capacitor_SMD:C_0603_1608Metric | C14, C17, C20, C21 |
| 4 | 470μF | Capacitor_THT:CP_Radial_D10.0mm_P5.00mm | C2, C3, C18, C19 |
| 3 | Conn_01x05 | Connector_JST:JST_XH_B5B-XH-A_1x05_P2.50mm_Vertical | STEPPER, STEPPER, TOF + MOTOR |
| 3 | SW_SPDT | Library:toggleswitch | SW4, SW5, SW6 |
| 2 | 0.1μF | Capacitor_THT:C_Disc_D3.4mm_W2.1mm_P2.50mm | C4, C8 |
| 2 | 10uF | Capacitor_SMD:C_0805_2012Metric | C15, C16 |
| 2 | 15pF | Capacitor_SMD:C_0603_1608Metric | C22, C23 |
| 2 | 1uF | Capacitor_SMD:C_0603_1608Metric | C10, C13 |
| 2 | 2.2k | Resistor_SMD:R_0603_1608Metric | R14, R15 |
| 2 | 200 | Resistor_SMD:R_0603_1608Metric | R20, R21 |
| 2 | 20K | Resistor_SMD:R_0603_1608Metric | R5, R6 |
| 2 | 22μF | Capacitor_SMD:C_0805_2012Metric | C6, C7 |
| 2 | 27 | Resistor_SMD:R_0603_1608Metric | R25, R26 |
| 2 | 330 | Resistor_SMD:R_0603_1608Metric | 330, R18 |
| 2 | 4.7uF | Capacitor_SMD:C_0603_1608Metric | C5, C9 |
| 2 | 5.1k | Resistor_SMD:R_0603_1608Metric | R3, R4 |
| 2 | LED | LED_THT:LED_D3.0mm | D2, D4 |
| 2 | OKL-T_6-W12N-C | Library:MURATA_OKL-T-6-W12N-C_0 | MD1, MD2 |
| 2 | PHOTO | Connector_JST:JST_XH_B6B-XH-A_1x06_P2.50mm_Vertical | J11, J12 |
| 1 | 100n | Capacitor_SMD:C_0402_1005Metric | C11 |
| 1 | 100u | Capacitor_SMD:C_0603_1608Metric | C24 |
| 1 | 10KΩ | Resistor_SMD:R_0603_1608Metric | R7 |
| 1 | 10μF | Capacitor_THT:CP_Radial_D5.0mm_P2.50mm | C12 |
| 1 | 120 | Resistor_SMD:R_0603_1608Metric | R29 |
| 1 | 20k | Resistor_SMD:R_0603_1608Metric | R2 |
| 1 | 2N7000 | Package_TO_SOT_THT:TO-92_Inline_Wide | Q3 |
| 1 | 2SA1015 | Package_TO_SOT_THT:TO-92_Inline | Q1 |
| 1 | 2SC1815 | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | Q2 |
| 1 | 33 | Resistor_SMD:R_0603_1608Metric | R24 |
| 1 | 47uF | Capacitor_THT:CP_Radial_D5.0mm_P2.00mm | C1 |
| 1 | 7.5k | Resistor_SMD:R_0603_1608Metric | R1 |
| 1 | 8.2K | Resistor_SMD:R_0603_1608Metric | R12 |
| 1 | Boot_2350 | Library:TVAF06-A020B-R | SW2 |
| 1 | CAMERA | Connector_JST:JST_XH_B4B-XH-A_1x04_P2.50mm_Vertical | J17 |
| 1 | CUHS20S30 | Diode_SMD:D_SOD-323_HandSoldering | D1 |
| 1 | Conn_01x02_Pin | Connector_AMASS:AMASS_XT60-M_1x02_P7.20mm_Vertical | J15 |
| 1 | Conn_01x02_Pin | Connector_AMASS:AMASS_XT60PW-M_1x02_P7.20mm_Horizontal | J1 |
| 1 | Conn_01x03 | Connector_JST:JST_XH_B3B-XH-A_1x03_P2.50mm_Vertical | SERVO |
| 1 | Conn_01x04 | Connector_JST:JST_XH_B4B-XH-A_1x04_P2.50mm_Vertical | J5 |
| 1 | Conn_01x15 | Connector_PinSocket_2.54mm:PinSocket_1x15_P2.54mm_Vertical | J18 |
| 1 | Crystal_GND24 | Crystal:Crystal_SMD_SeikoEpson_FA238-4Pin_3.2x2.5mm | Y1 |
| 1 | Fuse | Library:3557-15_fuseholder | F1 |
| 1 | MAX485ED | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U2 |
| 1 | MBKK1608T3R3M | Inductor_SMD:L_0603_1608Metric | L1 |
| 1 | NJM2819 | Package_TO_SOT_SMD:TO-252-5_TabPin3 | U1 |
| 1 | RP2350 | Library:USB_C | J2 |
| 1 | RP2350_80QFN | Library:RP2350-QFN-80-1EP_10x10_P0.4mm_EP3.4x3.4mm_ThermalVias | U5 |
| 1 | SLA7078MPRT | Library:sla7078 | U4 |
| 1 | SW_Push | Library:takuto_sw | SW3 |
| 1 | SW_SPDT | Library:toggleswitch_tuyo | SW1 |
| 1 | TOF | Connector_JST:JST_XH_B4B-XH-A_1x04_P2.50mm_Vertical | J16 |
| 1 | TOUCH | Connector_JST:JST_XH_B2B-XH-A_1x02_P2.50mm_Vertical | J10 |
| 1 | ToF | Connector_JST:JST_XH_B4B-XH-A_1x04_P2.50mm_Vertical | J8 |
| 1 | ToF3 | Connector_JST:JST_XH_B6B-XH-A_1x06_P2.50mm_Vertical | J6 |
| 1 | ToF4 | Connector_JST:JST_XH_B6B-XH-A_1x06_P2.50mm_Vertical | J7 |
| 1 | UDB-05LFPN | Buzzer_Beeper:Buzzer_12x9.5RM7.6 | BZ1 |
| 1 | W25Q128JVS | Package_SO:SOIC-8_5.3x5.3mm_P1.27mm | U3 |
| 1 | WS2812B | LED_SMD:LED_WS2812B_PLCC4_5.0x5.0mm_P3.2mm | D3 |
| 1 | gyro | Library:bno055 | J9 |
The 105 most common of 110 parts.
Questions
How big is the Sendai pcb PCB?
It measures 110 × 176 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Sendai pcb use?
110 parts, built around the RP2350A, MAX485ED, OKL-T/6-W12N-C and SLA7078MPRT. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Sendai pcb KiCad files?
From the nuoo1125/sendai_pcb repository on GitHub, at the commit this page was made from: the board is main.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Sendai pcb design in my own project?
Its repository states no licence, so its author keeps all rights: ask nuoo1125 before reusing the design.
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